CN207920923U - Without spiral case air-conditioning draught fan and air conditioner indoor unit - Google Patents

Abstract

This application involves a kind of no spiral case air-conditioning draught fan and air conditioner indoor unit, no spiral case air-conditioning draught fan includes air box, impeller and motor；Directed fluid inlet and air outlet are provided on the air box, the impeller and motor are arranged in the air box, and the central shaft of the impeller is fixedly connected with motor shaft, and the motor is fixed in the air box；The directed fluid inlet, the air inlet of impeller and motor shaft are respectively positioned on same straight line；The air inlet of the impeller is arranged at directed fluid inlet；Deflector is additionally provided in the air box, for changing with the direction of the postrotational wind of the impeller, the wind after the deflector water conservancy diversion exports the deflector from the air outlet.The application can reduce the eddy current loss in air box without spiral case air-conditioning draught fan, improve the efficiency of wind turbine.

Description

Without spiral case air-conditioning draught fan and air conditioner indoor unit

Technical field

The application belongs to air-conditioning draught fan technical field, and in particular to a kind of no spiral case air-conditioning draught fan and air conditioner indoor unit.

Background technology

Upgrade with the consumption of household appliances, domestic air conditioning product is also upgraded to temperature from traditional simple air-conditioner temperature adjusting The full dimension of humidity, fresh air and cleanliness factor and air current composition is adjusted, this is just to wind turbine form, air-blower control mode and noise reduction More stringent requirements are proposed for measure.Existing domestic air conditioning generally uses cross flow fan, axial flow blower or the centrifugation wind for having spiral case Machine.However, the pressure head that cross flow fan can be provided is small；Axial flow blower installation form is not suitable for；There is volute casing centrifugal blower fan to go out one's intention as revealed in what one says Fast high, dynamic pressure is big, but static pressure efficiency is low, when fan outlet blows to evaporator, since wind speed is high and outlet air is concentrated, evaporator is made to meet Wind face wind-engaging is uneven, influences the heat exchange efficiency of heat exchanger.

Invention content

To overcome the problems, such as at least to a certain extent present in the relevant technologies, this application provides a kind of no spiral case air-conditionings Wind turbine.

According to the embodiment of the present application in a first aspect, this application provides a kind of no spiral case air-conditioning draught fans comprising wind turbine Case, impeller and motor；Directed fluid inlet and air outlet are provided on the air box, the impeller and motor are arranged at the wind In cabinet, the central shaft of the impeller is fixedly connected with motor shaft, and the motor is fixed in the air box；It is described to lead Inflow entrance, the air inlet of impeller and motor shaft are respectively positioned on same straight line；The air inlet of the impeller is arranged in directed fluid inlet Place；Deflector is additionally provided in the air box, the deflector is for changing with the direction of the postrotational wind of the impeller, warp Wind after the deflector water conservancy diversion is exported from the air outlet.

Further, the air box uses rectangular parallelepiped structure, and the water conservancy diversion, which is arranged, on the one side of the air box enters Mouthful, the air outlet is set on the side opposite with side where the directed fluid inlet；In the air box, from the water conservancy diversion On entrance to the direction of the air outlet, the impeller and motor are set gradually；The impeller rotation is formed by plane and institute Plane where stating directed fluid inlet is parallel；

The deflector is arranged at the directed fluid inlet, and the deflector uses annular surface structure, the annular bent The diameter of face structure one end is less than the diameter of its opposite end；The smaller one end of diameter and the impeller in the annular surface structure Projection of the front shroud on the wind turbine chamber interior wall where the directed fluid inlet overlap, be relatively large in diameter in the annular surface structure One end connect with the inner wall of the air box.

Further, the annular surface structure is rotated by a curved section around the central axes of the air box horizontal direction Obtain, the starting point of the curved section be at the top of the front shroud of the impeller a little in the air box where the directed fluid inlet Projection on wall, the terminal of the curved section are at the top of the back shroud of the impeller a little in the wind where the directed fluid inlet Projection in the adjacent inner wall of cabinet inner wall.

Further, the curved section meets Archimedes spiral equation or log spiral equation.

Further, the width of the air box and height be all higher than or equal to 1.6 times of impellers diameter.

Further, the air box uses bottom surface for the rectangular parallelepiped structure of arc, is set on the one side of the air box The directed fluid inlet is set, the air outlet is arranged in the top surface of the air box；In the air box, from the directed fluid inlet institute Direction of the side to its opposite flank on, set gradually the impeller and motor, the impeller rotation is formed by plane It is parallel with the plane where the directed fluid inlet；The deflector is the lower arcuate surface of the air box.

Further, the lower arcuate surface of the air box as side of the curved section where with the directed fluid inlet to The side of its opposite flank is pulled up to obtain, and the two-end-point of the curved section was respectively the level that the center of the impeller is done The intersection point of line and air box both sides inner wall, the horizontal line that the center of the excessively described impeller is done with where the directed fluid inlet Side is parallel, and the curved section meets Archimedes spiral equation or log spiral equation.

Further, horizontal to the right or to the left, the impeller institute of installation site of the impeller in the air box The side of deviation, the spacing of the edge of the impeller and the inner wall of the air box are greater than or equal to the straight of 0.15 times of impeller Diameter.

According to the second aspect of the embodiment of the present application, present invention also provides a kind of air conditioner indoor unit comprising the nothing Spiral case air-conditioning draught fan.

Further, the air conditioner indoor unit further includes flowing case, and the stream case uses the rectangular configuration of both ends open, The import of the stream case and the air outlet of the air box are equal sized, and the outlet face evaporator of the stream case is in level Projection on face.

The technical solution that embodiments herein provides can include the following benefits：The application is relative to there is spiral case wind Spiral case is replaced with air box, deflector is arranged in air box by machine, can reduce the eddy current loss in air box, improves wind turbine Efficiency.By the way that sound-proof sound-absorbing material is arranged in air box, noise can be effectively reduced.

It should be understood that above general description and following detailed description is only exemplary and explanatory, not The application can be limited.

Description of the drawings

The drawings herein are incorporated into the specification and forms part of this specification, and shows the implementation for meeting the application Example, and the principle together with specification for explaining the application.

Fig. 1 is a kind of one of the structural schematic diagram of no spiral case air-conditioning draught fan shown according to an exemplary embodiment.

Fig. 2 is a kind of second structural representation of no spiral case air-conditioning draught fan shown according to an exemplary embodiment.

Fig. 3 is a kind of main view of air conditioner indoor unit of application without spiral case air-conditioning draught fan shown according to an exemplary embodiment Figure.

Fig. 4 is a kind of side view of air conditioner indoor unit of application without spiral case air-conditioning draught fan shown according to an exemplary embodiment Figure.

Specific implementation mode

Example embodiments are described in detail here, and the example is illustrated in the accompanying drawings.Following description is related to When attached drawing, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements.Following exemplary embodiment Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended The example of consistent device and method of some aspects be described in detail in claims, the application.

Fig. 1 is a kind of one of the structural schematic diagram of no spiral case air-conditioning draught fan shown according to an exemplary embodiment.Such as Fig. 1 Shown, the application includes air box 1, impeller 2 and motor 3 without spiral case air-conditioning draught fan.11 He of directed fluid inlet is provided on air box 1 Air outlet 12.Impeller 2 and motor 3 are arranged in air box 1, and the central shaft of impeller 2 is fixedly connected with 3 axis of motor, and motor 3 is logical Holder is crossed to be fixed in air box 1.Directed fluid inlet 11, the air inlet 21 of impeller 2 and 3 axis of motor are respectively positioned on same straight line. The air inlet 21 of impeller 2 is arranged at directed fluid inlet 11.Preferably, for ease of all importing in the air inlet 21 of impeller 2 wind, Directed fluid inlet 11 stretches into the air inlet 21 of impeller 2, i.e. directed fluid inlet 11 and the air inlet 21 of impeller 2 overlaps.

Deflector 13 is additionally provided in air box 1, deflector 13 is for changing with the side of the wind after 2 high speed rotation of impeller To.Wind after 13 water conservancy diversion of deflector is exported from air outlet 12.

In a specific embodiment, air box 1 uses rectangular parallelepiped structure, and water conservancy diversion is arranged on the one side of air box 1 Air outlet 12 is arranged on the side opposite with 11 place side of directed fluid inlet for entrance 11.In air box 1, from directed fluid inlet 11 Onto the direction of air outlet 12, impeller 2 and motor 3 are set gradually.2 center of impeller is fixedly connected with 3 axis of motor.Impeller 2 rotates It is parallel with the plane where directed fluid inlet 11 to be formed by plane.The diameter of 11 side of directed fluid inlet is less than 2 air inlet 21 of impeller Diameter, the side of such directed fluid inlet 11 can indent stretch into the air inlet 21 of impeller 2.

Deflector 13 is set at directed fluid inlet 11, and deflector 13 uses annular surface structure, annular surface structure one end Diameter is less than the diameter of its opposite end.The front shroud of the smaller one end of diameter and impeller 2 is in directed fluid inlet in annular surface structure The projection on 1 inner wall of air box where 11 overlaps, and the one end being relatively large in diameter in annular surface structure and the inner wall of air box 1 connect It connects.In this way, impeller 2 is located in the annular surface structure of the use of deflector 13.Wind enters leaf from the directed fluid inlet 11 of air box 1 The air inlet 21 of wheel 2.Motor 3 rotates impeller 2 and rotates, and the wind for entering air inlet 21 is led deflector 13 by impeller 2, and wind is led It turns after to deflector 13, is exported from the air outlet 12 of 1 side of air box.The setting of deflector 13 can optimize air box Air-flow in 1 reduces noise.

Specifically, the forming process of annular surface structure is：With any at the top of the front shroud of impeller 2 in directed fluid inlet 11 It is projected as starting point on 1 inner wall of air box at place, with any at the top of the back shroud of impeller 2 in the wind where directed fluid inlet 11 It is projected as terminal in the adjacent inner wall of 1 inner wall of cabinet, does a curved section, axis of the curved section around 1 horizontal direction of air box Line rotary circularizes curved-surface structure.

Further, curved section meets Archimedes spiral equation or log spiral equation.Deflector 13 is set Meter can reduce the eddy current loss in air box 1, reduce noise, improve the efficiency of wind turbine.

In the present embodiment, to further decrease noise, sound-proof sound-absorbing material is covered on the inner wall of air box 1.It is making an uproar Noise reduction can be effectively reduced noise at sound source.

In the present embodiment, motor 3 is using EC motors 3 (brush DC variable-frequency motor) or (the DC frequency-changing electricity of DC motors 3 Machine), stepless speed regulation can be carried out.

In the present embodiment, the width of air box 1 and height be all higher than or equal to 1.6 times of impellers 2 diameter.It is such to set Setting can ensure to ensure its best performance while the cost of no spiral case air-conditioning draught fan is minimum.

The air box 1 of this structure is used in wall-hanging air conditioner indoor unit.The application without spiral case air-conditioning draught fan in use, Case 4 is flowed in setting one at the air outlet 12 of air box 1, flows rectangular configuration of the case 4 using both ends open.Flow the import of case 4 It is equal sized with the air outlet 12 of air box 1.The projection of the outlet face evaporator 5 of stream case 4 in the horizontal plane.Flow case 4 Outlet area be greater than or equal to the projection of evaporator 5 in the horizontal plane area.Such design makes sectional wind velocity low, Static pressure is high, and sectional wind velocity is evenly distributed.

In the present embodiment, the height of stream case 4 is greater than or equal to the diameter of 1.2 times of impellers 2.On the inner wall of stream case 4 Sound-proof sound-absorbing material is covered, noise can be effectively reduced.

Fig. 2 is a kind of second structural representation of no spiral case air-conditioning draught fan shown according to an exemplary embodiment.Such as Fig. 2 Shown, in a specific embodiment, air box 1 uses bottom surface for the rectangular parallelepiped structure of arc.On the one side of air box 1 Directed fluid inlet 11 is set, and air outlet 12 is arranged in the top surface of air box 1.In air box 1, from the side where directed fluid inlet 11 to On the direction of its opposite flank, impeller 2 and motor 3 are set gradually.2 center of impeller is fixedly connected with 3 axis of motor.Impeller 2 rotates It is parallel with the plane where directed fluid inlet 11 to be formed by plane.

The lower arcuate surface of air box 1 is as deflector 13.In this way, wind enters impeller 2 from the directed fluid inlet 11 of air box 1 Air inlet 21.Motor 3 rotates impeller 2 and rotates, and the wind for entering air inlet 21 is led deflector 13 by impeller 2, and wind is led It turns after flowing plate 13, is exported from the air outlet 12 of 1 top surface of air box.The lower arcuate surface of air box 1 can optimize air box 1 Interior air-flow reduces noise.

The forming process of the lower arcuate surface of air box 1 is：A horizontal line is done at the center for crossing impeller 2, and horizontal line enters with water conservancy diversion Side where mouth 11 is parallel, using the intersection point of horizontal line and 1 both sides inner wall of air box as beginning and end, does a curved section, Curved section is pulled up in the side with side to its opposite flank where directed fluid inlet 11, obtains the lower arcuate surface of air box 1.

Further, curved section meets Archimedes spiral equation or log spiral equation.The arc of air box 1 The design of bottom surface can reduce the eddy current loss of 1 lower half portion of air box, reduce noise, improve the efficiency of wind turbine.

In the present embodiment, to further decrease noise, sound-proof sound-absorbing material is covered on the inner wall of air box 1.It is making an uproar Noise reduction can be effectively reduced noise at sound source.

In the present embodiment, motor 3 is using EC motors 3 (brush DC variable-frequency motor) or (the DC frequency-changing electricity of DC motors 3 Machine), stepless speed regulation can be carried out.

In the present embodiment, the width of air box 1 and height be all higher than or equal to 1.6 times of impellers 2 diameter.It is such to set Setting can ensure to ensure its best performance while the cost of no spiral case air-conditioning draught fan is minimum.

In the present embodiment, impeller 2 is preceding, and motor 3 is rear, with the direction towards impeller 2, if the steering of impeller 2 is Clockwise, then the central axes of 1 vertical direction of center deviation air box of impeller 2 to the right, i.e. installation of the impeller 2 in air box 1 Position level is to the right；If the steering of impeller 2 is counterclockwise, the central axes of 1 vertical direction of center deviation air box of impeller 2 To the left, i.e. installation site level of the impeller 2 in air box 1 is to the left.

When impeller 2 deviates the central axes installation of 1 vertical direction of air box, the side that impeller 2 is biased to, the side of impeller 2 Edge is greater than or equal to the diameter of 0.15 times of impeller 2 with the spacing of the inner wall of air box 1.

The air box 1 of this structure is used in vertical air-conditioner indoor unit.The application is without spiral case air-conditioning draught fan in use, in wind Case 4 is flowed in setting one at the air outlet 12 of cabinet 1, flows rectangular configuration of the case 4 using both ends open.Stream case 4 import with The air outlet 12 of air box 1 is equal sized.The projection of the outlet face evaporator 5 of stream case 4 in the horizontal plane.Flow case 4 The area of outlet is greater than or equal to the area of the projection of evaporator 5 in the horizontal plane.Such design makes sectional wind velocity low, quiet Pressure is high, and sectional wind velocity is evenly distributed.

In the present embodiment, the height of stream case 4 is greater than or equal to the diameter of 1.2 times of impellers 2.On the inner wall of stream case 4 Sound-proof sound-absorbing material is covered, noise can be effectively reduced.

As shown in Figures 3 and 4, present invention also provides a kind of air conditioner indoor unit, use no spiral case provided by the present application empty Adjust wind turbine.Further include that stream case 4, stream case 4 uses the rectangular configuration of both ends open in air conditioner indoor unit.

About the device in above-described embodiment, wherein modules execute the concrete mode of operation in related this method Embodiment in be described in detail, explanation will be not set forth in detail herein.

It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments Unspecified content may refer to same or analogous content in other embodiment.

It should be noted that in the description of the present application, term " first ", " second " etc. are used for description purposes only, without It can be interpreted as indicating or implying relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple " Refer at least two.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any One or more embodiments or example in can be combined in any suitable manner.

Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned Embodiment is changed, changes, replacing and modification.

Claims (10)

1. a kind of no spiral case air-conditioning draught fan, which is characterized in that it includes air box, impeller and motor；It is arranged on the air box There are directed fluid inlet and air outlet, the impeller and motor to be arranged in the air box, the central shaft and motor of the impeller Axis is fixedly connected, and the motor is fixed in the air box；The directed fluid inlet, the air inlet of impeller and motor shaft are equal It is located on the same line；The air inlet of the impeller is arranged at directed fluid inlet；It is additionally provided with deflector in the air box, The deflector is for changing with the direction of the postrotational wind of the impeller, and wind after the deflector water conservancy diversion is from the outlet air Mouth export.

2. as described in claim 1 without spiral case air-conditioning draught fan, which is characterized in that the air box uses rectangular parallelepiped structure, institute It states and the directed fluid inlet is set on the one side of air box, on the side opposite with side where the directed fluid inlet described in setting Air outlet；In the air box, from the directed fluid inlet to the direction of the air outlet on, set gradually the impeller and electricity Machine；It is parallel with the plane where the directed fluid inlet that the impeller rotation is formed by plane；

The deflector is arranged at the directed fluid inlet, and the deflector uses annular surface structure, the annular surface knot The diameter of structure one end is less than the diameter of its opposite end；In the annular surface structure before the smaller one end of diameter and the impeller Projection of the cover board on the wind turbine chamber interior wall where the directed fluid inlet overlaps, one be relatively large in diameter in the annular surface structure End is connect with the inner wall of the air box.

3. as claimed in claim 2 without spiral case air-conditioning draught fan, which is characterized in that the annular surface structure by a curved section around The central axes of the air box horizontal direction rotate to obtain, and the starting point of the curved section is one at the top of the front shroud of the impeller Projection of the point on the wind turbine chamber interior wall where the directed fluid inlet, the terminal of the curved section are the back shroud top of the impeller Some projection in the adjacent inner wall of the wind turbine chamber interior wall where the directed fluid inlet in portion.

4. as claimed in claim 3 without spiral case air-conditioning draught fan, which is characterized in that the curved section meets spiral of Archimedes Equation or log spiral equation.

5. as claimed in claim 2 without spiral case air-conditioning draught fan, which is characterized in that the width and height of the air box are all higher than Or the diameter equal to 1.6 times of impellers.

6. as described in claim 1 without spiral case air-conditioning draught fan, which is characterized in that the air box uses bottom surface for the length of arc Cube structure, the directed fluid inlet is arranged on the one side of the air box, and the air outlet is arranged in the top surface of the air box； In the air box, from the side where the directed fluid inlet to the direction of its opposite flank, the impeller is set gradually And motor, it is parallel with the plane where the directed fluid inlet that the impeller rotation is formed by plane；The deflector is described The lower arcuate surface of air box.

7. as claimed in claim 6 without spiral case air-conditioning draught fan, which is characterized in that the lower arcuate surface of the air box is by a curve The side of side to its opposite flank where directed fluid inlet described in Duan Yu is pulled up to obtain, the two-end-point point of the curved section The intersection point of the horizontal line and air box both sides inner wall that are not done for the center of the excessively described impeller, the center institute of the excessively described impeller The horizontal line done is parallel with the side where the directed fluid inlet, and the curved section meets Archimedes spiral equation or right Number helix equation.

8. as claimed in claim 6 without spiral case air-conditioning draught fan, which is characterized in that installation of the impeller in the air box Position to the right or to the left, the side that the impeller is biased to of level, between the edge of the impeller and the inner wall of the air box Away from the diameter more than or equal to 0.15 times of impeller.

9. a kind of air conditioner indoor unit, which is characterized in that it includes if claim 1~8 any one of them is without spiral case air-conditioner wind Machine.

10. air conditioner indoor unit as claimed in claim 9, which is characterized in that further include flowing case, the stream case uses both ends The rectangular configuration of opening, the import of the stream case and the air outlet of the air box are equal sized, the outlet for flowing case The projection of face evaporator in the horizontal plane.